OK, I did not notice the 3 finger Tap options. Mine seems to work, if I 3 finger tap in IE it starts the scroll function.
I do not have a mouse connected which might have drivers for its middle button.., just the basic system using Win 10.
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XPS 2720, Inspiron 17 7779, Inspiron 15 7567, XPS 13 9365, Inspiron 1545, TB16 Dock